I did not buy mine from Sports Authority..oh yeah, I did...one of mine. Yeah, it sucked. I went on the net and got an industrial type ball..called the Swiss ball. It was 37.00 before shipping but very durable and burst resistant. I suggest you check out the more durable products on the net. I believe it has to do with the material they are made out of. Duraball is also excellent....
Janice